The D66 includes one D28 and one D38 dry bag to create 66 liters of 100% waterproof storage. Modular packing has significant advantages over a single bag of the same volume. The two-bag D66 system makes packing and organizing your gear easier, allows for quicker access to your gear, and enables strategic separation of your gear; keeping your clean clothes separate from your wet tent. Each D-Series bag is also designed to mount directly to your bike, so you truly get three different bags in one. Use the D28 on local trails, strap on the D38 for around town, or connect the D66 for your longer adventures.

I purchased this bag so that I wouldn't have to worry about a rain cover like on my other bag. It is easy to pack and to get stuff out of it at stops along my trips. I have been in some really bad rain on a couple of trips and it kept everything 100% dry. (Posted on 9/16/2015)

Review by CAL

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I bought these bags a couple of months ago and wanted to wait on a review until I had a chance to really test them out. I had a chance to use them for an 8 day trip through New Mexico and Texas on my Triumph Bonneville. The mounting system is great, easy to install and keeps the bags tight to the bike. It also allows them to be quickly and easily removed when you get to your destination. The bags are a little stiff at first, but after a few days of packing and unpacking, they will break in nicely. As far as waterproof, they definitely passed the test. Rode through several thunderstorms and even some snow, the contents were dry as when I put them in! Highly recommend this product for its quality, durability, ease of use and for the fact that it's made in the USA! (Posted on 5/20/2015)

Review by theSoldoctor

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I used the bags on a 4 day 1,000 mile trip recently and they worked great. The opening is a little difficult to work with but to keep things dry it is worth the small issue. Love the adjustable connectors! A quality product! (Posted on 5/11/2015)

Review by Nick

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These bags rock. I mounted them horizontally across the rear seat of my new DRZ400SM on a 2,040 mile trip from MA down to VA this past week. I used the D28 primarily as a tent bag, with my tent, fly, and bag of poles loose inside. There was still space left at one end for a mess kit, a first aid kit, my owner's manual, and an extra visor for my helmet. In the D38, I had space for clothing for the week in stuff sacks, a sleeping bag, and some coffee brewing equipment. The mounting straps were easy to use and made getting the gear on and off the bike quick and painless. My gear stayed dry through several downpours and even a hailstorm on the MD/PA border. I needed to put my rain gear and my sleeping roll in an extra dry bag/stuff sack which I bungee-ed to the rear of the bike, using the bags as a mounting point. This would be a great system for a week long trip. For camping, the only other thing I would have liked is some sort of shoulder strap or way to turn it into a backpack set-up. Hiking through trails with just handles on the bags was tough. That said, in and out of motels, or parking at a rally would be perfect. Likewise, if you can pitch your tent right next to your bike, that's ideal. Everything felt very secure, and the fit and finish of the bags is excellent. Didn't hurt that they look great, too. It made my trip that much more enjoyable to have gear I could trust. Now that I'm back, I'm running the D38 on its own, lengthwise down the tail of the DRZ, as a regular bag. Since I wanted to keep the already light bike as light as possible, I feel like this was a great luggage choice and I'm incredibly happy. Also, Angela worked with me to switch up my order from D20 side bags to the D28 as a last minute solution to a backorder issue. That was the right call! Don't think I would have had as much use for the side bags unless I wanted to add them to this set up and maximize overall capacity. (Posted on 4/29/2015)

Review by jiminTexas

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I have the D66 bags and used these travelling for over 15000 miles through more than a few showers and downpours. Never once failed me and the ease of attachment and removal to the bike is outstanding. Contents are available without removal from the bike and transporting is easy when detached. Only drawback is the outside zipped pocket could be a bit roomier to store paperwork or casha nd change. (Posted on 3/3/2015)

Review by Adam

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Bought this for my KTM990 instead of a rear top case (at more than 1/2 less the cost) and glad i did.
Already had the D28's which are perfect on top of my Zega Pro pannier lids. With this system i can organize all my riding/ camping gear in separate bags and not waste time digging through conventional dry bags to retrieve one item. High quality construction and the orange looks great too . (Posted on 2/21/2015)

Review by cybervet

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After reading a TON of reviews, I chose this bag system. First thing I noticed is that there is a massive amount of storage space. If you need more than this, along with your bike's storage, you're taking too much. These bags are very heavy weight and so are fairly stiff. This makes loading a little difficult, but I'll happily trade ease of loading for durability. The strap system that Dryspec uses is really neat and seems secure. I'm paranoid, so the Rok straps go around too for security. Probably don't need it. My only wish for something more might be to add some sort of external pocket that can be accessed easily on the road. There really is nothing other than a REALLY small and tight pocket.

Best of all, the two tone grey looks good on my bike. (Posted on 9/18/2014)

Review by Adam

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Bought this for my KTM990 instead of a rear top case (at more than 1/2 less the cost) and glad i did.
Already had the D28's which are perfect on top of my Zega Pro pannier lids. With this system i can organize all my riding/ camping gear in separate bags and not waste time digging through conventional dry bags to retrieve one item. High quality construction and the orange looks great too . (Posted on 8/14/2014)